
Jones is presented as foolish although very excitable, often jumping to rash conclusions that we as readers know are incorrect as Holmes and Watson have just been unraveling the facts and tracked the highly probable sequence of events beforehand. Sherlock often assists the police in such cases and throughout this tale, the Detective in question is Alatheny Jones.

Holmes and Watson soon find themselves trying to figure out the facts behind a locked-door murder. It was never going to be as simple as Holmes, Watson, and Miss Marston meeting up with the letter's sender and a reasonable explanation being given regarding the pearls. In fact, Holmes states "I would rather have Toby's help than that of the whole detective force of London." The Sign of Four also introduces Holmes' youthful detective squad The Baker Street Irregulars and a bloodhound Toby who has an amazing sense of smell. Such as that he was an exceptional boxer, a highly adept violin player and a master of disguise.

It also mentions certain elements that build the Sherlock character and his working environment that people nowadays take for granted as being well-known facts about the character. In my opinion, Conan Doyle took everything that worked in that novel, structured it better, composed a superior story, and had some more colourful characters. A Study in Scarlet was a good introduction but like many readers, I didn't like the second half of that tale as it didn't focus on everybody's favourite master of deduction. Watson's first-person perspective, The Sign of Four is my second favourite of Conan Doyle's four full-length Sherlock Holmes stories. Holmes, no longer depressed and bored seems overtaken by a burst of energy and states that himself and Watson will accompany her to the meeting and hopefully shed light on these untypical events. She asks Holmes' advice regarding what she should do. However, recently she has received an anonymous note from the sender of the jewels saying that they would like to arrange a meeting. On the 4th of May for the last six years, she has received a rare and valuable pearl in the post. The potential customer, Miss Marstan, who wishes to employ the world's only consulting detective explains the scenario.

Conveniently a client with a particularly peculiar and complex case appears that very day. With nothing to focus his incredible powers of deduction on at the present time, he decides to spend his days injecting a seven-percent-solution of cocaine. The narrative begins with a very bored Sherlock Holmes at 221b Baker Street.
